新型无PN结的碳化硅肖特基栅双极模式场效应晶体管(SiC SBMFET)

M. Jagadesh Kumar, H. Bahl
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引用次数: 2

摘要

在n型硅衬底上采用P+栅极的双极模式场效应晶体管(bmfet)是大电流中功率开关和光控开关中最常用的功率器件。这些是具有深P+栅极结的双栅器件,需要较大的热循环来扩散。在本文中,我们提出了一种新的肖特基栅极BMFET (SBMFET),使用p型4H碳化硅(一种宽带隙材料),其中PN结栅极被肖特基栅极取代。我们用二维数值模拟的方法研究了该器件的特性。我们的研究结果首次证明了P-SiC肖特基门BMFET具有非常低的ON压降,良好的输出特性,合理的电流增益和大于1000 V的阻塞电压
本文章由计算机程序翻译,如有差异,请以英文原文为准。
New Silicon Carbide Schottky-gate Bipolar Mode Field Effect Transistor (SiC SBMFET) without PN Junction
The bipolar mode field effect transistors (BMFETs) using P+ gates on N-type silicon substrate are the most commonly used power devices for high-current medium-power switching applications and as optically controlled switches. These are dual gate devices with deep P+ gate junctions, which require large thermal cycles for diffusion. In this paper, we propose a novel Schottky-gate BMFET (SBMFET) using P-type 4H silicon-carbide, a wide bandgap material, in which the PN junction gates are replaced by the Schottky gates. We have studied the characteristics of this device using two-dimensional numerical simulation. Our results demonstrate for the first time that the P-SiC Schottky-gate BMFET has very low ON voltage drop, good output characteristics, a reasonable current gain and a blocking voltage greater than 1000 V
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